Hemorrhoid surgery is not required to remove the anus, have not heard of any person because of hemorrhoids and remove the anus, because hemorrhoids occur mainly because of bad habits in life, such as diet spicy stimulation, drinking more alcohol or long standing, long standing, constipation, pregnancy and other reasons, impede the reflux of the rectal veins, resulting in perianal veins of the tortuous, dilated, the formation of a soft venous mass, to call it a Hemorrhoids. For the same reason, when doing surgery, only need to remove the pathological varicose vein mass can be, do not need to remove the whole anus, because the whole anus, in addition to mucous membrane, blood vessels, and anal sphincter, and rectal mesentery of the tissue, these do not need to be removed, just remove the pathological varicose vein mass can be.